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[PATCH V3 08/14] KVM: MIPS: Let indexed cacheops cause guest exit on Loo
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From: |
Huacai Chen |
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Subject: |
[PATCH V3 08/14] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3 |
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Date: |
Sun, 3 May 2020 18:06:01 +0800 |
Loongson-3's indexed cache operations need a node-id in the address,
but in KVM guest the node-id may be incorrect. So, let indexed cache
operations cause guest exit on Loongson-3.
Signed-off-by: Huacai Chen <address@hidden>
Co-developed-by: Jiaxun Yang <address@hidden>
---
arch/mips/kvm/vz.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/mips/kvm/vz.c b/arch/mips/kvm/vz.c
index f9fbbc16..ab320f0 100644
--- a/arch/mips/kvm/vz.c
+++ b/arch/mips/kvm/vz.c
@@ -2853,8 +2853,12 @@ static int kvm_vz_hardware_enable(void)
write_c0_guestctl0(MIPS_GCTL0_CP0 |
(MIPS_GCTL0_AT_GUEST << MIPS_GCTL0_AT_SHIFT) |
MIPS_GCTL0_CG | MIPS_GCTL0_CF);
- if (cpu_has_guestctl0ext)
- set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ if (cpu_has_guestctl0ext) {
+ if (current_cpu_type() != CPU_LOONGSON64)
+ set_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ else
+ clear_c0_guestctl0ext(MIPS_GCTL0EXT_CGI);
+ }
if (cpu_has_guestid) {
write_c0_guestctl1(0);
--
2.7.0
- Re: [PATCH V3 03/14] KVM: MIPS: Increase KVM_MAX_VCPUS and KVM_USER_MEM_SLOTS to 16, (continued)
- [PATCH V3 04/14] KVM: MIPS: Add EVENTFD support which is needed by VHOST, Huacai Chen, 2020/05/03
- [PATCH V3 05/14] KVM: MIPS: Use lddir/ldpte instructions to lookup gpa_mm.pgd, Huacai Chen, 2020/05/03
- [PATCH V3 06/14] KVM: MIPS: Introduce and use cpu_guest_has_ldpte, Huacai Chen, 2020/05/03
- [PATCH V3 07/14] KVM: MIPS: Use root tlb to control guest's CCA for Loongson-3, Huacai Chen, 2020/05/03
- [PATCH V3 08/14] KVM: MIPS: Let indexed cacheops cause guest exit on Loongson-3,
Huacai Chen <=
- [PATCH V3 09/14] KVM: MIPS: Add more types of virtual interrupts, Huacai Chen, 2020/05/03
- [PATCH V3 10/14] KVM: MIPS: Add Loongson-3 Virtual IPI interrupt support, Huacai Chen, 2020/05/03
- [PATCH V3 11/14] KVM: MIPS: Add CPUCFG emulation for Loongson-3, Huacai Chen, 2020/05/03
- [PATCH V3 12/14] KVM: MIPS: Add CONFIG6 and DIAG registers emulation, Huacai Chen, 2020/05/03
- [PATCH V3 13/14] KVM: MIPS: Add more MMIO load/store instructions emulation, Huacai Chen, 2020/05/03